The Interaction Forces in Magnetic Support Systems of Vertical Type

In this article, the vertical and horizontal forces of the interaction of permanent magnets in a Magnetic Suspension (support) System of Vertical Type (MSVT) are considered. The magnetic support system contains multi-row magnetic bands (strips), which have alternating polarity. The magnetization vector, M, is directed horizontally, as opposed to classical support systems where M is directed vertically. The results of the comparison of the vertical and lateral forces for the classic Magnetic System of Horizontal Type (MSHT) and the MSVT are presented too. An effectiveness factor, mu eff = fz/mg, is adopted (where fz is the vertical force per unit length of magnetic band and mg is its weight) and is used as the principle criterion for comparison. In this paper it is shown that when the vertical displacement of the moving part of the support system of MSVT causes the vertical force, fz, to reach its maximum, the lateral force fy is at its minimum.